Vibratory Analysis Of A Rotating Bladed Disk Using Holographic Interferometry And Laser Vibrometry

Jean-Loup Lesne; Th. Fevrier; Ph. Triquigneaux; C. Le Floc'h

doi:10.1117/12.952356

16 July 1986 Vibratory Analysis Of A Rotating Bladed Disk Using Holographic Interferometry And Laser Vibrometry

Jean-Loup Lesne, Th. Fevrier, Ph. Triquigneaux, C. Le Floc'h

Proceedings Volume 0599, Optics in Engineering Measurement; (1986) https://doi.org/10.1117/12.952356
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

Abstract

By the use of two different optical technics, we investigate the resonant response of a bladed disk (30 blades, 1.2 m diameter) under various industrial conditions of rotation and vibratory excitation. The two complementary technics we used to perform a modal analysis are : the double pulse image derotated holography and the laser vibrometry. By spectral analysis of the vibrometer's signal, we are able to construct an inverse Campbell diagram of the spinning disk. A six minutes movie shows the test facility, the optical systems and some holograms with nodal lines.

Citation Download Citation

Jean-Loup Lesne, Th. Fevrier, Ph. Triquigneaux, and C. Le Floc'h "Vibratory Analysis Of A Rotating Bladed Disk Using Holographic Interferometry And Laser Vibrometry", Proc. SPIE 0599, Optics in Engineering Measurement, (16 July 1986); https://doi.org/10.1117/12.952356

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